Thread: FM "deviation"
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Old 31st Mar 2010, 2:58 pm   #33
jimmc101
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Join Date: Mar 2009
Location: Portsmouth, Hampshire, UK.
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Default Re: FM "deviation"

If anyone is interested in plumbing the murky depths of Bessel functions and FM sidebands, Excel has the Bessel function as part of the analysis pack. ( It's not installed by default. For Excel 2000 it's Tools > Add-Ins > Analysis ToolPak)

I've attached a simple spreadsheet for calculating the amplitude of the first 10 sidebands relative to the unmodulated carrier for a number of values of modulation index. (Sheet1 absolute, Sheet2 dB)

Jim
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File Type: zip FM sidebands.zip (8.8 KB, 88 views)
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